Round Hill, VA 20131 Frost Dates
Frost dates for Round Hill, VA, ZIP 20131
The last spring frost here typically falls around 04/16, about 231 days from today. The first fall frost typically arrives around 10/25, about 189 frost-free days later.
The USDA Plant Hardiness Zone Map puts Round Hill in Zone 7a (0 to 5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
Zone 7a around Round Hill has about 8 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
How much risk comes with planting early here
04/16 is the middle of 30 years of NOAA records, not a promise. Plant by 03/31 and you're betting against frost in roughly 9 years out of 10. 05/07 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Round Hill compares
Round Hill's growing season runs about 189 days, ranking 21,676 of 40,283 US ZIP codes measured here, longest to shortest. Within VA, it ranks 881 of 1,178.
Learn more
local microclimates explains what one yard in Round Hill can differ from the 20131 normal, and zone vs. frost date explains why Zone 7a and Round Hill's frost date answer different questions.